Substituting Aluminum Chlorohydrate with Potassium Alum in Deodorant Cream Base (ID 124994)
คำถาม
I am working with the Antiperspirant / Deodorant Base Cream (ID 124994) formulation and would like to substitute Aluminum Chlorohydrate with Potassium Alum. I need guidance on the following points:
- Is it possible to use Potassium Alum instead of Aluminum Chlorohydrate in this base?
- If substitution is possible, should I use the powder form or another type?
- What is the recommended usage percentage for Potassium Alum?
- Could you provide detailed instructions on the mixing steps and method required to ensure stability when incorporating Potassium Alum into the cream base?
คำตอบ
1. Can Potassium Alum replace Aluminum Chlorohydrate?
Yes, Potassium Alum (Potassium Aluminum Sulfate) can be used in the Antiperspirant / Deodorant Base Cream (ID 124994) as a substitute for Aluminum Chlorohydrate.
- Functional Difference: Please note that Aluminum Chlorohydrate is a true antiperspirant (blocks sweat ducts), while Potassium Alum primarily functions as a deodorant (inhibits odor-causing bacteria) and a mild astringent (tightens pores). The final product will be more of a deodorant than a strong antiperspirant.
- Compatibility Note: Potassium Alum is highly acidic (pH 3.0-4.0 in solution). Adding it will significantly lower the pH of the base (which starts at 5.5-6.5). This requires careful mixing to prevent the cream emulsion from breaking.
2. Which form should be used?
You should use the Potassium Alum Powder form. It is crucial that the powder is fully dissolved in water before mixing it into the cream base to ensure uniform dispersion and stability.
3. What is the required amount?
For deodorant and astringent properties, a typical usage rate for Potassium Alum is 3-5% of the total formula. We recommend starting with 3% to minimize the risk of destabilizing the cream due to the low pH.
4. Recommended Steps and Mixing Method:
- Prepare the Alum Solution: Weigh the desired amount of Potassium Alum powder (e.g., 3g for a 100g batch). Dissolve it completely in a small amount of water (e.g., 5-10g of water). Stir until the solution is clear.
- Mixing: Slowly add the prepared Potassium Alum solution to the Antiperspirant / Deodorant Base Cream (85-90% of the formula) in small increments. Stir gently and continuously during the addition process.
- Observation: Stir until the solution is fully incorporated and the cream remains smooth and uniform. If the cream separates or becomes grainy, the emulsion has broken.
- Final Check: Check the final pH of the product. The final pH should ideally be maintained above 4.0 to help preserve the stability of the cream base.
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